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Author Topic:   Nav lights stopped working on brand new 305
nooner posted 03-25-2006 03:55 PM ET (US)   Profile for nooner   Send Email to nooner  
So I decide to take some friends on a cocktail cruise and then dock up at a restaurant on San Diego Bay. my nav lights are working fine. But when we get back to the boat to make our way home, the red and green lights don't come on. No fuses seemed to be blown, they just wouldn't turn on. This is a 2006 305 conquest, so needless to say I was a little bummed something like that happened after a month of owning her...although I know things like this always happen with boats. if anyone has any idea on anything I should try before calling up a specialist to come down and figure it out I'd appreciate it. Thanks!
kglinz posted 03-25-2006 05:19 PM ET (US)     Profile for kglinz  Send Email to kglinz     
Did you notice if your compass light was on. The compass light power is off the same terminal on the switch as the red/green lights. If the compass light wasn't on start at the switch. If it was on it's probably in the wire between the switch and the lights. The "all around light" should be on with the switch in either Anchor or Nav position.
nooner posted 03-25-2006 08:57 PM ET (US)     Profile for nooner  Send Email to nooner     
yea compass light worked...turned out to be some corroded bulb contacts. Didn't expect that on a new boat. thanks
jimh posted 03-27-2006 12:41 AM ET (US)     Profile for jimh  Send Email to jimh     
You might try using some grease, perhaps some Vasoline for example, and coat the light bulb base and socket (after you have the light bulb in place).

When you clean the contacts, do not rough them up. Burnish the contacts with some very fine sandpaper, like 600 grit or higher.

handn posted 03-27-2006 09:13 AM ET (US)     Profile for handn  Send Email to handn     
Another common reason for navigation light failure is corrosion of the rocker switch. Mine would turn on the anchor lights on the first click but the switch wouldn't switch to the second position to turn on the navigation lights. Rocking the switch back and forth a bunch of times solved the problem. The switch likes to be exercised. Most of us day boat and rarely turn on the lights.
As jimh says, corrosion in the bulb socket itself occurs. Check the integrity of the gasket around the fixture. If salt water intrudes, it is a matter of days before the light fails.
Chuck Tribolet posted 03-27-2006 09:57 AM ET (US)     Profile for Chuck Tribolet  Send Email to Chuck Tribolet     
Vaseline is not the right stuff. When it gets hot (and it
will with the bulb on), it melts and runs.

The right stuff is a dialectric silcone-based grease made for
the job.


jimh posted 03-27-2006 05:53 PM ET (US)     Profile for jimh  Send Email to jimh     
Good point, Chuck! You can get that grease at an auto-supply store.
glen e posted 03-27-2006 05:55 PM ET (US)     Profile for glen e  Send Email to glen e     
Replace them with the LED nav lights coming out now - much less power and the won't corrose as they are epoxy sealed...
nooner posted 03-28-2006 03:36 AM ET (US)     Profile for nooner  Send Email to nooner     
thanks everyone for the helpful suggestions!
Sal A posted 03-28-2006 05:07 AM ET (US)     Profile for Sal A  Send Email to Sal A     
Great idea, Glen. Captain Kevin has a great article on how he did this with his boat (non Whaler), but the documentation and pictures are great; I am doing my boat in two or three weeks.

skred posted 03-29-2006 01:37 PM ET (US)     Profile for skred  Send Email to skred     
Why couldn't a person replace the 12 volt bulb assembly in the existing bow light housing with an LED assembly, and seal it up? Too simple, I suspect. I googled for LED Nav lights, but didn't find anything that would be a simple replacement for the bow light on my 130 Sport...
Sal A posted 03-29-2006 01:48 PM ET (US)     Profile for Sal A  Send Email to Sal A
skred posted 03-29-2006 01:52 PM ET (US)     Profile for skred  Send Email to skred     
Sal, I assume the "Combination Sidelight" is the deckmout red/green configuration. Didn't quite understand the "sidelight" term...
prm1177 posted 03-30-2006 10:10 AM ET (US)     Profile for prm1177  Send Email to prm1177     
The term "sidelight" refers to the function of marking the port and starboard sides of the boat, and not the mounting location. Other names are bow light and side markers.
Lars Simonsen posted 03-31-2006 08:00 AM ET (US)     Profile for Lars Simonsen  Send Email to Lars Simonsen     
An excellent product for preventing corrosion of electrical contacts is Fluid Film. It forms a sticky, non-conductive (so it won't cause shorts) film over the contacts, keeping the clean and corrosion free. It's great stuff, and made exactly for this purpose.


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